Machine for trimming books



muren stares earner ernten.

M. RIEHL, OF PHILADELPHIA, PENNSYLVANIAY MACHINE FCR TRIIVIMING BOOKS.

Specification forming part of Letters Patent No. 13,501, dated August 28, 1855; Reissued May 4, 1869, No. 8,422.

To all whom it may concern Be it known that I, M. Rini-IL, of the city and county of Philadelphia and State of Pennsylvania, have invented a new and Improved Machine for Cutting or Trimming the Edges of Paper, Designed Chiefly for Bookbinders and Printers Use; and I 'do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l, is a front view of my improvement. Fig. 2, is a transverse section of ditto Fig. 1,shows the plane of section. Fig. 8, is a detached side view of the rotating table on which the paper or books to be trimmed or cutis clamped. Fig. 4, is a plan or top view of ditto.

Similar letters of reference indicate corresponding parts in the several figures.

The nature of my invention consists in the peculiar mode of hanging the knife and the mode of operating the same.

T o enable others skilled in the art to make and use my invention, I will proceed to describe it.

A, A, represent two uprights, the upper ends of which are connected by a cross piece B. The lower ends of the uprights are secured to a suitable base. The uprights have slots made in them, one in each, in which slots the ends of a bar C, are fitted, said bar being attached by swinging arms (a) (a) to the cross piece B. The arms (a) (a) are attached by pivots (o) to the bar and cross piece, t-he arms being parallel with each other.

To the front or outer side of the bar C, there is attached by a pivot c one end of a bar D. The opposite end of this bar is attached by a pivot (fl) to a worm wheel E, the bar being connected to the wheel between its center and periphery, as shown in Fig. l. The worm wheel E, is hung on a small shaft (e) which works in suitable bearings in projections (f) attached to one of the uprights A.

F, is a screw which gears into the worm wheel E. .The shaft of this screw has a hand wheel or driving pulley G, on its outer end.

H, is a knife which is secured to the lower part of the bar C, and extends the whole length of said bar.

I, represents a bed which works upon a horizontal frame J, said bed being fitted and working between ledges (g) (g) one at each side of the frame as shown clearly in Fig. 1. The frame is properly secured between the uprights A, A.

K, Figs. 2, 3 and 4f, represents a square table to the underside of which a pin (z.) .is attached. This pin passes through a hole (2') in the bed I, as shown in Fig. 2. L, is a screw rod which works in an internal thread out in an aperture in the pin (it), and M is a plate attached to the upper part of the screw rod, said plate working on vertical guide rods or bars (j) (j) attached to the table K. To the underside of the table K, there is attached an annular plate N, which has four recesses (7c) cut in it atequal distances apart, and in which a pawl O, catches, said pawl passing through the bed I and regulated by a weight P, the pawl O, works between guides (Z) (Z), see Figs. 2 and 3. The recesses (7c) are of the same form as those cut in ratchets, so that the table K, may be turned in one direction but is prevented from turning in the opposite direction by the pawl.

Operation: The piles of paper or unbound books, shown in red Figs. l, 2, are placed upon the table K, underneath the plate M, and at opposite sides of the screw rod L. The plate M, is then pressed firmly down upon them by turning the rod L. rI he bed I, is then moved by hand toward the knife H, till the edges of one of the piles of paper or books are brought underneath it, motion is then given the wheel or pulley G, in any proper manner, and the knife H, owing to the attachment of the bar C, to the cross piece B, by the arms (a) (a) is brought down upon the paper with a drawing cut and the knife passes through the paper eutting or trimming the edges of the books or piles of paper. As the knife ascends the table K, is turned by hand and the other book or pile of paper is brought under the knife H, which cuts as before. prevented from turning while the knife is acting upon the paper by means of the pawl O.

The above machine is extremely simple and operates well. It may be operated by hand, steam or other power as the pulley G, is turned in one direction only in order to give the reciprocating motion to the knife.

The table is Having thus described my invention, What tained, and operating the knife by means of I claim as new and desire to secure by Letthe Worm Wheel E, screw F, and connecting ters Patent, is bar D, as described.

Hanging or attaching the knife H, to the M. RIEHL. 5 cross piece B, of the uprights A, A, by the `Witnessesz arms (a) (a) as herein shown, whereby a W. Gr. CONKERT, drawing or oblique cut of the knife is obl HENRY HOWARD.

[FIRST PRINTED 1912.] 

